Silan

Semiconductors

SC84520

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0

2000.12.31

14

4.Z-AXIS INPUT FUNTION:

a. Photo couples input: Z-axis counter accumulates the Z1, Z2 phase changed by movement.

b. Key-switches input: Pressing Z1, Z2 will start to fill the Z-axis counter with the value beginning at one. Toggling

“M” key can increase the value any time by one. The limit value is

±7.

c. The relationship between the value and the transmission rate as follows:

Value

Rate per second

12.7

26.4

39.2

4

12.8

515

618

720

d. Voltage-sensing mode: There are 7 voltage levels in Z1, Z2 input. The transmission table is the same as key-

switch mode. The relationship between the value of Z-axis counter and the voltage as follows:

Value

Voltage

0

1V

↓

1

1.0V – 1.6V

2

1.6V – 2.2V

3

2.2V - 2.8V

4

2.8V – 3.4V

5

3.4V – 4.0V

6

4.0V – 4.6V

7

4.6V

↑

Under VDD = 5V condition

e. Mechanical mode: The same as optical wheel mode.